Use this button to paste the link you want to download, alternatively you can press ⌘+V on Mac or Ctrl+V on the PC keyboard. If you paste a playlist link by clicking this button while holding the Alt key, then the app will expand the playlist automatically
It opens the Tracking dialog where you can manage your playlist or channel subscriptions.
Starts downloading all items in the download list. You can change the number of simultaneous downloads in the Preferences.
Immediately removes the selected item from the download list (if the video is already downloaded, it will not affect the file).
You can edit the most used tags here before a track is downloaded. You can also edit tags of multiple tracks at once.
Starts downloading the selected track.
Pops up a dialog where you can change the found artwork to the one you like.
Opens the default file browser in the location of the downloaded file.
Right-click on any track or several selected tracks to get a menu with additional functions.
It has some more options and indicators and will be explained below.
You can filter downloads by state, you can activate this in the Options menu, see below.
YouTube Downloader can download both audio streams and videos entirely, use this switch to choose what you want. There is also a global switch on the main toolbar.
Select the desired quality from this list, you can also set some defaults in Settings.
This displays the current output format that will be used for all downloads.
Clean up the download list by removing completed downloads or wipe it completely by choosing Clear
Easy way to access application preferences and some of the most used options
It turns blue when iTunes export is enabled
It turns blue when the speed limit mode is enabled. Can be configured in Preferences -> Download
Turns blue if something instead of 'Do nothing' is selected
Quick access to 'Add new videos' function from the Tracking feature
About dialog can be found here, and it also displays some links to tutorials when they are available